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For the multiple choice, what did you guys get for question 14, the period?

The beauty of doing 4 unit maths is doing physics as well, as this may help you understand the PHYSICAL concepts in mechanics. For projectile motion, definitely know how to derive the equations for horizontal and vertical displacement. Know how to derive equation for max height where v=0, know...

Good question. It is good to have a background knowledge in physics, especially for 4 unit projectiles and resisted motion, at max height, velocity in vertical component is 0: v=0, know the eccentricity of circle is 0. So they do overlap. However, sadly now days, due to physics being an arts...

I looked at the marking guidelines guys, and the way it works is you may get one mark for using the correct equation from the formula sheet given in the hsc exam and the other marks purely go off correct answer. Are you sure they will still give marks even for using calculus? I reckon you could...